*load-xref-info*

This variable is a boolean which determines whether cross-reference
information in a fasl file is loaded and stored into the
cross-reference database (recall that compiling a file only puts
cross-reference information in the fasl file). When
*load-xref-info* is true, the cross-reference database
will be updated with any cross-reference information stored in fasl
files that are loaded. The value of this variable controls loading
done by any method (by
load,
:ld,
:cload,
require, etc.)
and none of those functions or
commands have arguments that can override the value of this
variable.

The initial value of this variable is dependent on how Lisp was
installed. Users who want cross reference information recorded should
set this value and that of
*record-xref-info* variable
to t. Be warned that compilation time, image size and
fasl file size are all increased by the generation and loading of
cross reference information.